Garbage cremator or calciner.



No. 631,457. Patented Aug. 22, i899.

F. W. DENNIS. GARBAGE CREMATUR 0B CALCINER.

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No. 63|,457. Patented Aug. 22, |899.

F. W. DENNIS. GARBAGE CREMATB 0R CALQINER.

(Application led Aug. 5, 1B98.\

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UNI-TED STATES PATENT @rr-ICE.

I-IALE' To JAMES FRANKLIN LESTER, or SAME PLACE;

GARBAGE CREMATQR 0R eALclNER.

' SPECIFICATION forming part of Letters Patent No. 631,457, dated August 2,2, 1899.

Atpntttion nea August 5, 189s.

.To all whom, t'nwtycmwe'n:

Be it known that I, FREDERICK W'ALTER DENNIS, a citizen ofthe United States, resid# ing at Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Continuous Garbage Gremators or Calciners and I do declare the following to be a full, clear, and exact de# scriptionof the invention, such as will enable others Skilled in the art to which it appertainsv to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

My invention is a continuous self-burning garbage cremator or calciner constructed .to' burn garbage, animal matter, and the like' and at the same time to consume and destroy the odors and smoke arising therefrom and may be used for drying minerals, ores, clays, and other substances, each furnace and its auxiliary furnace being provided with a flue leading to one main central stack and a cutoff, said cut-offs and flues so arranged that the heat may be carried from each-furnace and its auxiliary to the next until the entire circuit of the crematoris made. Any number of furnaces and chambers may be 'arranged to use one smoke-stack.

In the .accompanying drawings, Figure 1 is a front elevation of my cremator with the front partly broken away and the framework above the briekwork removed. Fig. 2 is a horizontal sectionalview of Fig. 1 cut on the line y y of Fig. 1. Fig. 3 is a vertical sectional view cut on the line x x,- as indicated' in Fig. 2. Figli is a vertical sectional view, as indicated by the line a e' of Fig. 2.

In the accompanying drawings, A B C D are furnaces, and et b c d are their auxiliaries, respectively. Each furnace A B C D and a, b c d is provided with doors and a fire-box 1, and each fire-box is provided with grate-bars 2. These gratebars rest on walls constructed of stone, hre-brick, or other fireproof masonry. Extending from the forward end of these grate-bars 2 in furnaces A, B, C, and D are arches '3, and beyondthe arches 3 are the flame-pits 4, inclosed in walls 5, 6, 7, and 8. (See furnace C, Fig. 2.) AThe brick iioors between the iiues are on a level with the gars'eriai No. 687,863. (No man.)

bage-bars. The center walls 6, the right-hand walls 7 and the end walls S are provided with perforations 9, so that heat from the starting-furnace-say, furnace A-passes under garbage-bars 20, and then passes partly through perforations in walls 6 and 8 into flame-pocket 10 and passage 11, thence along flue 12, thence through and over the garbage to the left into iiue 13, thence underl arch 14 into flue 15, thence under and through grates 16'and through auxiliary furnace a, in which charcoal, coke, or smokeless coal is burned to consume odors and smoke, (by .the combustion of which great heat is obtained for drying and heating garbage in next chamber 13,) thence, if cut-off 18 is open, along flue 17 into smoke-stack 19, and thence upward into the elements above; but if/c'ut-off 1S between furnaces A and B is closed then the heat and flames will go along flue 15 intor fui-nace B, andv thenceforth they will take the same course throughfurnace B that they did in the first instance through furnace A, and if cut-off 18 d between furnaces B and C is open the Vheat and iiames will go along flue 17 between B and C to smoke-stack 19. If all the eut-offs 18 are closed except the last in the circuit, the heat and flame will pass through all the furnaces and chambers, thence to smokestack 19 through the last open cut-off 18. Thus it will be seen that I can run one furnace with its auxiliary or I may run two or more furnaces with their respective auxiliaries with one fire in the initial or beginning furnace. By passing the heat around from chamber to chamber, as above described, I dry the garbage before burning and use it as fuel. When the garbage in the first or initial chamber has been consumed, the doors to the furnace of this first chamber are closed and the doors to the next or second chamber in order are opened and the garbage in this second chamber will beignited and begin burning with little or no additional fuel or combustible matter. This process will be continued around the entire circuit, and the first chamg Ico bage-bars 20, of; iron or some other non-combustible material, and on cach ol' these garbage-bars are situated removable small frameworks 21, also of iron or other non-combustible material, to keep the garbage from packing.

The furnaces A B C D and their auxiliaries a, b, c, and (Z and ash-pits are cleared out through their outside openings or doors, but to the left of each furnace, and on a line with arches 3 and garbage-bars 2O (see Fig. 3) are openings 22, through which all unconsumed matter may be drawn.

The outerwalls of fire-box 1 to furnaces A, B, C, and D are extended upward to top of cremator, forming fuel-chamber 35 (see Fig. 3) over the outer ends of grate-bars 2. This chamber is to receive dry or combustible garbage and is provided with a lid at the top to be opened when dumping garbage into this chamber and ,to be closed at other times to prevent escape of smoke or odor. At the bottom of this chamber about one foot above the fire-box are two or more iron rods 3G. These bars are loose and serve the purpose of regulating the discharge of the garbage into the fire-box. There are perforations 34 through the walls of the main garbage-chamber into this fuel-chamber. Theseperforationsadmit steam and odors into the main garbagechamber, where they are carried, with the smoke and iiames, into the regular course of the furnace. (See Fig. 3.) This fuel-chamber is designed to provide dry combustible material to supply fuel to the furnaces A, B, C, and D.

On the left of one furnace is constructed an oxygen-flue 33 on the grade-line, running from outside of main wall to base of smokestack 19. (See dotted lines, Fig. 2, to the left of furnace A.) This is used to admit when necessary oxygen to smoke-stack for the purpose of creating additional combustion to consume such smoke or odors as have not been consumed in the auxiliary furnaces. This fine will be regulated by a eut-off on the outside.

Through the top of the cremator are du mping-holes 23, one over each chamber. These dumping-holes are provided with covers 24, operated by levers 25, secured to pendants 2G, the lower ends of which are secured to said covers 2l, said levers fulcrumed in bearings 2", depending from the upper beams 28 of the framework on top of the cremator.

Secured to the framework and main stack are beams 29, each provided with a pulley 80. In these pulleys 30 work ropes 3l, and to the lower ends are attached the dampers or cutoifs 18, and by mea-ns of these pulleys, ropes, and weights said dampers are operated.

The cremator may be braced in any secure manner desired, and it maybe built circular instead of square and with any number of furnaces and chambers, and it may be built to operate from left to right instead of from right to leftby interchanging walls 5 '7.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A cremator, consisting of an outer wall and an inner Wall, leaving between said walls a continuous flue 15; main furnaces A, 13,0, D, to consume the garbage; each having auxiliary furnace a, b, c, d, on a level with the main furnace, to consume the odors and smoke; each main furnace having a solid wall 5, and perforated walls 6, 7, and 8, to support the garbage-bars; flame-pockets 10, passages 11, flues 12, arches 3, and garbagebars 20; iiues 13 leading from main furnaces into flue 15, conducting the smoke and odors through auxiliary furnaces ct, l), c, d, into ilues 17; eut-offs 18, one in each flue 17, with means for feeding and cleaning out said furnaces, substantially as shownand described and for the purposes set forth.

2. A cremator, consisting of an outer wall an d an inner wall, leaving between said walls a continuous flue 15; main furnaces A, B, C, D, to consume the garbage; each having aux- 'iliary furnaces ce, h, c, d, on a level with the main furnace, to consume the odors and smoke; each main furnace having a solid wall 5, and perforated walls 6, 7, and 8, to support the garbage-bars; dame-pockets 10, passages ll, flues 12, arches 3, and garbage-bars 20; i'lucs 13 leading from main furnaces into flue 15, conducting the smoke and odors through auxiliary furnaces c, l), c, d, into flues 17; oxygen-flue leading from the outer wall, under the cremator, to the central stack, with means for feeding and cleaning out the eremator, substantially as shown and described and for the purposes set forth.

3. A cremator, consisting of an outer wall and an inner wall, leaving between said walls a continuous iiue 15; main furnaces A, B, C, D, to consume the garbage; each having auxiliary furnaces a, b, e, d, on a level with the main furnace, to consume the odors and smoke; each main furnace having a solid wall 5, and perforated walls G, 7, and 8, to support the garbage-bars; flame-pockets 10, passages 1l, iiues 12, arches 3, and garbage-bars 20; flues13 leading from main furnaces into flue 15, conduct-ing the smoke and odors through auxiliary furnaces a, b, c, d, into ilues 17; cross-beams 29, pulleys 30, ropes 31 and weights 32 for operating cut-offs 18, substantially as shown and described and for the purposes set forth.

4. In a cremation-furnace, the combination of garbage-chambers, of fuel-chambers, the walls separating the garbage and fuel chambers being provided with openings Set and openings 22, main furnaces situated beneath and communicating with the fuel-chambers, and removable iron rods, situated betweenthe fuel-chambers and the lnain furnaces, where- IOO by the gases 01": the fuel-chambers are per- In testimony whereof I affix my signature mitted to escape to the garbage-chambers in presence of tWo Witnesses.

through openingsi and whereby the dried garbage may be raked through openings 22 FREDERICK VALTER. DENNIS to the fuel-chambers, and then discharged Witnesses:

into the main furnaces,substantia11yas shown J. T. CULVER, and described and for the purposes set forth. W. W. HASKELL. 

